Question

which term do these characteristics describe?
the substance is not uniform in appearance and each part of the mixture contains a combination of different ingredients in different ratios
pure substance
solution
homogeneous mixtures
heterogeneous mixtures

Explanation:

A pure substance has a uniform composition. A solution (a type of homogeneous mixture) has a uniform appearance and composition. Homogeneous mixtures have a uniform composition throughout. Heterogeneous mixtures are not uniform in appearance and have different ratios of components in different parts.

Answer:

heterogeneous mixtures